In science,a proton has a positive charge while an electron has a ___ charge. A. negative B. neutral C. positive D. zero 相关知识点: 试题来源: 解析 A。选项 A“negative”是“负的”,质子带正电,电子带负电。选项 B“neutral”是“中性的”;选项 C“positive”是“正的”;选项 D“zero”...
A proton is an elementary particle of matter that (拥有) a positive charge.相关知识点: 试题来源: 解析 possesses 本题考查动词解题步骤:1. 分析句意:质子是带正电荷的物质的基本粒子。2. 确定答案。根据中文提示"拥有",确定单词为possess。句意为客观真理,因此应用三单形式,故本空填possesses。
求语法题a proton has a positive charge and an electron a negative charge,but a neutron has a neither b both WHY? 答案 质子带正电,电子带负电,中子不带电(正负电都不带).Neither就是都不的意思,所以选A相关推荐 1求语法题a proton has a positive charge and an electron a negative charge,but ...
if a proton has a relative mass of 1 unit and a relative charge of +1 unit .what is the接上relative mass and charge of :1.a neutron2.an electron? 答案 质子,中子,电子...有什么关系?化学知识忘没了.搞清它们关系了应该就能选出来了.相关推荐 1if a proton has a relative mass of 1 unit...
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What is the charge on a proton?Sub-atomic Particles:An atom is composed of three different particles that are known as sub-atomic particles. These are neutrons, protons and electrons. The former two are present inside the nucleus. While, the electron is keep revolving around the nucleus....
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1 Compared to the charge of a proton, the charge of an electron has (4)(1) a greater magnitude and the same sign(2) a greater magnitude and the opposite sign(3)the same magnitude and the same sign(4)the same magnitude and the opposite sign 相关知识点: 试题来源: 解析 (4) ...
已知氯气和NaOH溶液在一定温度下能发生反应:Cl2+2NaOH===NaCl+NaClO+H2O,3Cl2+6NaOH===5NaCl+NaClO3+3H2O。某温度下,将氯气通入NaOH溶液中,反应得到NaCl、NaClO和NaClO3的混合溶液,经测定ClO－与ClO的物质的量之比为1∶3,则氯气与氢氧化钠反应时,被还原的氯元素和被氧化的氯元素的物质的量之比为( )
求语法题a proton has a positive charge and an electron a negative charge,but a neutron has a neither b both WHY? 英语作业帮用户2016-11-24 举报 用这款APP,检查作业高效又准确!扫二维码下载作业帮 拍照搜题,秒出答案,一键查看所有搜题记录 ...